Manual automatic device for indicating the favorable periods for conception in women



y 1944- M. D. D. s. BRANDAO 2,350,219

MANUAL AUTOMATIC DEVICE FOR INDICATING THE FAVORABLE PERIODS FOR CONCEPTION IN WOMEN Filed July 15, 1941 3 Sheets-Sheet 1 JYZZorQqyr May 30, 1944. D. D. s. BRANDAO 2,350,219 MANUAL AUTOMATIC DEVICE FOR INDICATING THE FAVORABLE PERIODS FOR CONCEPTION IN WOMEN Filed July 15 1941 3 Sheets-Sheet 2 my. I

D. D. s. BRANDAO 2,350,219

May 30, 1944. M,

MANUAL AUTOMATIC DEVICE FOR INDIGATING THE FAVORABLE PERIODS FOR CONCEPTION IN WOMEN Filed July 15, 1941 3 Sheets-Sheet 3 Jig-J.

HEREITHEIST g T 65M ins ATION 2 onceph'on.

lnverzz ori M 9m dad MQM Zorrz ey Shorter menstrual cycle.

Patented May 30, 1944 UNITED STATES; PATENT OFFICE MANUAL AUTOMATIC DEVICE FOR I NDICAT- ING THE FAVOBABLE PERIODSFOB CON- CEPTIONINWOMEN Manoel "Dias do: sum mew,

Cambuquin, Brazil 1 I Application July 15, 1941, Serial No. In Bl'llil December 26; 1940 4 Claims. .(Cl. 40-115) not to date been designed, nor is as yet known,

to indicate the most favorable days for conception in a woman. This is precisely the object of the present invention.

The manual automatic device for indicating the favorable periods for conception in women, covered by this invention, comprises in substance two fixed outer discs, between which three inner discs are so disposed as to rotate on a common axis.

An example of an embodiment of the inven-- tion is illustrated in the attached drawings, in which Figure 1 shows the first fixed disc or base disc;

Figure 2 shows the first rotating disc, which is superimposed over the base disc;

Figure 3 shows the second rotating disc, which is superimposed over the first rotating disc;

Figure 4 shows the third rotating disc; which is superimposed over the second rotating disc;

Figure 5 shows the second fixed disc or cover disc; an

Figure 6 shows the complete device, after all discs are mounted.

With reference to the drawings, A (Fig. 1) is.

the first fixed disc or base disc provided with a central circular projection a which serves as an axis for the rotating discs of the device. The bottom b of the disc is longitudinally cut, and presents at its center a re-entrant round out b. In the upper part of this disc two sector bands 0 and d of 60 degrees each are marked and subdivided in 21 divisions each. In these divisions, numbers from 21 to 40 are printed or engraved in consecutive order, representing the intermenstrual periods or menstrual cycles in days. These two sector bands are spaced from each other by an interval corresponding to three subdivisions. The sector band at the left represents the shorter menstrual cycle and, to avoid confusion and Iacilitate the use of the device, it has the following words printed below the respective numbers: The sector band at the right represents the longer menstrualcycla,

and the following words are printed below the respective numbers: Longer menstrual cycle. The remaining portion of the border of the disc beyond the sector bands is provided with a strip 55 e of the same thickness as the central projec-I tion or axis a. g

Figure 2 shows the first rotating disc 13 with a central circular opening 1 into which projection a of disc Ants when disc 13 is superimposed over disc A. This first rotating disc has a longer radius along 163 degrees of its circumference than the remaining portion oi the disc, but this longer radius is shorter than the. radius of the first fixed disc. The difleren'ce between these two radii corresponds to the width of the sector bands of the fixed disc, including the numbered subdivisions and the printed words. ,In the sector of the disc corresponding to the longer'radius, there are 41 identical consecutive subdivisions so disposed to leave a blank space-corresponding to 7 subdivi- 5 sion at each end of the sector;- thus the length of the sector corresponds to 55 subdivisions. O!

"Shorter" is printed or engraved thereunder.

Figure 3 shows the second rotating disc C with a central circular opening in into which projection a of the base disc A also fits, on top 01' the first rotating disc B; This rotating disc C is similar to disc B, but its longer radius portion only covers 135 degrees of its circumference. The length of this sector corresponds to 46 subdivisions; starting irom they left end of the sector, 19 identical consecutive subdivisions are marked, leaving blank the remaining spaced corresponding to 27 subdivisions. divisions, the first 8, 1, from the left to the right, are filled in 'inthe same way used on the first rotating disc, and the remaining 11, m, are left blank, except the last subdivision n which carries an-arrow for the purpose hereinafter explained. ,As the first rotating disc, this second rotating discfalso' carries a projecting ear 0 prowided with a central window p. This projecting Of the 19 marked sublonger menstrual cycle, the word Longer is printed or engraved thereunder.

Figure 4 shows the third rotating disc'D with a central circular openingq :into which projection a of the base disczA also fits, ontop of the I second rotating disc C. The circumference of this third rotating disc D is uniform, its radius being shorter than'the radii of the above ,de-

scribed sectors of the-first andxsecond rotating discs, so as to uncover only .those portions of these discs containing the subdivisions of the shorter and longer menstrual cycles. The entire circumferenceof this thirdrotating disc is subdivided into 120 subdivisions, .in which numbers are printed or engraved representing the days of the months, in the followingorder:v a first, series of consecutive numbers from 1 to-28; a second series of numbers from 1 to. 31; athird series of numbers from 1- to '30; :and alfourth series of numbers from 1 to 31, or a totallof 120 numbers corresponding to the 120 subdivisions of the disc. The disposition of the "subdivisions of the three rotating discs-is such that those of the third rotating disc fall in line and just under those of the first and second rotating discs.

Finally, Figure 5 shows the second fixed disc-or cover disc E of the device, whichis secured by pasting or soldering, depending on the material used, to the strip e, and the projection auof the base disc A, thus leaving a free spacezbetween the non-pasted, or non-soldered portions of the two fixed discs A and E, in'which the rotating discs B, C and D can move. The upper part of the coverv disc E is cut at r as shown in Fig. 5

and this cut corresponds'to. 133 degrees of the. 1 disc circumference and is wide enough touncover the numbers and subdivisions of the formerdiscs. At the left of this cut 1', a projection s is provided in coincidencewith the subdivisions 21g andh of disc B. This projection is of such shape that it forms with the left corner of the cut 1- a void space t whichfalls upon and is of the same dimensions as the subdivisions of the rotating disc D. Similarly to the base disc A, the bottom 14 of this cover disc E is longitudinally cut and presents at its center a re-entrant round cutv, where the border of therotating'disc D is exposed. The cover disc contains explanatory inscriptions and figures; thus, under the left corner of the out r there is a quadrangle w containing the inscription Here the 1st day of the last.menstruation; from this quadrangle to the space t an arrow r indicates that. thenumber of the disc D corresponding to the 1st day of the last menstruation should be inserted in this space t. In the same position, 'but on the right corner of the cut 1, there is another quadrangle y containing a smaller quadrangle z of the same dimensions as the subdivisions of discs B and C and filled in inthe same way as the filled in subdivisions of said discs, followed by the inscription Days of conception.

The cutaway portions in the base and cover disc elements expose the I rotatable elements whereby they may be free for manual rotation by grasping same with the fingers.

An explanationof the mannerofusing the device may be printedon the back of the base disc A and is as follows: 1

In the first place, it is necessary to know the interval in days elapsed between menstruations. As this interval or menstrual cycle is not always constant, before using the device, it is necessary to take note of these intervals for aperiod of at the base disc.

July 8th, August 3rd and September 1st. Thus .there were intervals of 26 days from April 15th to May 11th; 28 days from May 11th to June 8th; '30 days from June 8th to July 8th; 26 days from July 8th to August 3rd and 29 days from August 3rd to. September 1st. From this it will be noted that the shorter menstrual cycle was of 26 days and the longer menstrual cycle of 30 days.

With this information, the windows 1 and p of the rotating discs B and C, respectively, are set over the subdivisions of the corresponding sectors of the base disc A, to mark the shorter and the longer menstrual cycles noted. In case these menstrual cycles were always equal, the same procedure'should 'be applied, the windows being set over identical numbers on the two sectors oi After this is done, the disc 'of the'months D is rotated to place the 1st day of the last menstruation within the space t below the. projection s, care being taken to use for a particular month the corresponding'portion of the rotatlngdisc (28,30 or 31 days). The resultis automatically given as follows: the days falling underthe filledin subdivisions of the rotating discs B and C indicate the days of fecundity, and those falling under the blank subdivisions, indicate the days of sterility. The arrow n of the second rotating disc C points to the remotest day of the next menstruation.

I claim: I

1. Manual automatic device for indicating the favorable periods for conception in women, characterized by, the fact that it is constituted by superimposed disc elements and sectors, composed of three disc elements and two sector elements in the, following order: a fixed disc or base disc, a rotating sector, a second rotating sector, a rotating disc and a fixed cover disc; the rotating elements being mounted on a common axis between the base andv cover discs, and.

the element sof the device carrying the necessary marks to determine the favorable periods for conception in women; further characterized by grees each, and each with a series of subdivisions by the fact that one of the rotating sectors is provided with a central circular opening into which the projection of the base disc fits, this sector being formed by a disc having a longer radius along 163 degrees of its circumference than the remaining portion of the disc, this longer radius being shorter than the radius of the base disc,

the difference between these two radii corresponding to the width of the band formed by the numbered subdivisions and the respective inscriptions of said base disc, the longer radius sector of the disc presenting 41 marked subdivisions so disposed to leave a blank space corresponding to 7 subdivisions at each end of the sector, the first 21 marked subdivisions from the left being left blank, and the remaining 20 subdivisions being filled in in any convenient way, the disc also carrying a projecting ear, fixed at the 19th, 20th and 21st subdivisions, said projecting ear being provided with an opening or window falling exactly upon the subdivisions of the base disc and having the same dimensions as these subdivisions, said window being marked by the word shorter."

2. Manual automatic device for indicating the favorable periods for conception in women, characterized by the fact that it is constituted by superimposed disc elements and sectors, composed of three disc elements and two sector elements in thefollowing order: a fixed disc or base disc, a rotating sector, a second rotating sector, a ro tating disc and a fixed cover disc; the rotating elements being mounted on a common axis between the base and cover discs, and the elements of the device carrying the necessary marks to determine the favorable periods for conception in women; further characterized by the fact that the fixed base disc is provided with a central circular projection which serves as an axis for the rotating elements of the device, with the bottom longitudinally cut and presenting at its center a re-entrant round out, the upper part of the disc presenting two sector bands of 60 degrees each, and each with a series of subdivisions numbered from 21 to 40, the series of subdivisions at the left being marked by the words Shorter menstrual cycle," and the series of subdivisions at the right being marked by the words Longer menstrual cycle, the remaining portion of the border of the disc beyond the sector bands being provided with a strip of suitable material and having the same thickness as the central projection; further characterized by the fact that the second rotating sector is provided with a central circular opening into which the projection of the base disc also fits on top of the first rotating sector, said second rotating sector being similar to the first rotating sector, but its longer radius portion covering only 135 degrees of its circumference, the length of this portion corresponding to 46 subdivisions, of which only 19 subdivisions starting from the left are marked, leaving blank the remaining space corresponding to 27 subdivisions, of the 19 marked subdivisions only 8 being filled in in the same way used on the first rotating sector and the remaining 11 being left blank, except the last subdivision which carries an arrow pointing in the direction of the center of the device; said second rotating sector also carrying a projecting ear provided with a central window, said projecting ear corresponding to three subdivisions, and being so disposed to leave a blank space corresponding to one subdivision after the last subdivision carrying the arrow, the central window of this ear falling exactly upon the right hand subdivisions of the base disc, said window being marked by the word "Longer.

3. A device of the character'described comprising a fixed base discelement having a cutaway portion and a central projection, a rotatable sector element having subdivisions mounted on said base element through said projection, a second rotatable sector element having subdivisions mounted over said first, sector element 3 through said projection, a rotatable disc element over said sector elements, a section of said fixed base disc element being provided with a built up strip corresponding in height to the height or the central projection, a fixed cover disc element having a cutaway portion secured to said central projection and to said built up strip whereby said rotatable elements may be rotated between that portion of the base disc element which is not bulit up, the radius of said rotatable disc element being shorter than the radii of the rotatable sectors, whereby only the subdivisions of said rotatable sectors are uncovered, said rotatable elements being of such size that the indicia along their perimeters will be exposed through the cutaway portion in the cover disc element, said rotatable disc element having its entire circumference subdivided into subdivisions comprising four series of consecutive numbers. numbered 1 to 28, l to 31, l to 30 and l to 31, said subdivisions being so arranged that they fall in line under the subdivisions of the rotatable sectors, said cutaway portions in the base and cover disc elements exposing the rotatable elements to facilitate their rotation.

4. A device of the character described con1- prising a fixed base disc element having a cutaway portion and a central projection, a rotatable sector element having subdivisions mounted on said element through said projection, a second rotatable sector element having subdivisions mounted over said first sector element through said projection, a rotatable disc element over said sector elements, a section of said fixed base disc element being provided with a built up strip corresponding in height to the height of the central projection, a fixed cover disc element having a cutaway portion secured to said central projection and to said built up strip whereby said rotatable elements may be rotated between that portion of the base disc element which is not built up, the radius of said rotatable disc element being shorter than the radii of the rotatable sectors, whereby only the subdivisions of said rotatable sectors are uncovered, said rotatable disc element having its entire circumference subdivided into 120 subdivisions comprising four series of consecutive numbers, said subdivisions being so arranged that they fall in line under the subdivisions of the rotatable sectors, said cover disc element cutaway portion adapted to uncover the subdivisions of the other elements of the device, there being at the left of the cut a projection in coincidence with the subdiviions of the first mentioned rotating sector element and of such shape that it forms with the left corner of the cut a void space which falls upon and is of the same dimensions as the subdivisions of the rotating disc, said cover disc element containing explanatory inscriptions and figures, such as a quadrangle under the left corner of the cut, containing the inscription Here the 1st day of the last menstruation," and from which an arrow points to the space, as well as another quadrangle under the right corner of the cut, containing a smaller quadrangle of the same dimensions as the subdivisions of the rotating sectors and filled in in the same way as the filled in subdivisions of said sectors, followed by the inscription Days of conception."

MANOEL DIAS nos SANTOS BaaNnAo. 

